| 摘要 |
PURPOSE:To drive a plurality of room air-conditioners while effectively making use of energy of solar battery. CONSTITUTION:Electric power generated from a solar battery 9 is distributed to respective room air-conditioners 16-19 by an electric power distributing unit 15 through an optimum effective electric power control device 14. The electric power distributing unit 15 detects a total load current value IL of those of the respective room air-conditioners 16-19 which are in operation. The effective electric power control device 14 compares the total load current value IL and an output current I of the solar battery 9 with each other to control an electric power generated from the solar battery 9 so that when IL<=I, the output current I of the solar battery 9 is made equal to the total load current value IL. When IL>I, the optimum effective electric power control 14 performs control so that the electric power generated from the solar battery 9 is made maximum. At this time, the electric power from the solar battery 9 is not enough for the respective room air-conditioners, so that such deficiency is made up for by an electric power from a commercial power supply. |
